• 结果所有标本都不同程度凝固收缩

    Results: All the luting cements had different extent curing shrinkage.

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  • 提高预测铸件凝固收缩缺陷准确度提出了频率因子概念

    A conception of "frequency factor" is suggested for improving the accuracy to forecast the shrinkage defects.

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  • 实践证明采用均衡凝固收缩模数设计液压试验平台浇冒系统可行的。

    The practice shows that it is feasible to design kiss gating-feeder of hydraulic test platform by applying moduli calculation method.

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  • 最后分别讨论了钢种结晶长度速度、铸坯断面尺寸结晶器锥度凝固收缩系数关系

    In the end the relationship of steel grades, mould length, drawing speed and sectional dimensions of the billet with mould taper and solidification and contraction coefficient has been discussed.

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  • 得到有益于认识铸件此类接头凝固特性热节位置变化规律,对工艺设计者认识和防止成型过程中产生凝固收缩缺陷必要的。

    The results are very important to understand the solidification characters of steel castings with T conjunction and to estimate the position of the hot-spot in the castings to avoid shrinkage defects.

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  • 主要明显尺寸效应凝固收缩应力问题避免减少铸铁井盖的成分偏析变形开裂缺陷的产生。

    Is mainly the size effect and solidification, shrinkage, stress and other issues clearly, to avoid or reduce the segregation, iron manhole cover deformation and crack defects.

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  • 目的熔化金属凝固收缩时往型腔里补充熔化金属,从而防止铸件中产生孔隙

    The purpose of this is to feed the molten metal to the mold cavity as the molten metal solidifies and shrinks, and thereby prevents voids in the main casting.

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  • 同时调整含量,有效地改变灰铸铁凝固转变过程体积收缩膨胀特性

    By changing the carbon and silicon in a proper way at the same time, the volume expansion or shrinkage feature in the cast iron solidification can be significantly changed.

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  • 研究表明:轮毂的工艺缺陷主要缩孔、缩松以及凝固过程收缩导致裂纹缺陷,主要分布在轮辋、辐条交汇的部位

    The results indicate that the casting defects are mainly shrinkage porosity and cracks caused by solidification shrink, which mainly presents in the hot spot between the spoke and the rim.

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  • 聚丙烯纤维各个方向上对抗水泥收缩应力,因此提高防水砂浆凝固强度,同时具有提高耐火极限的作用。

    The polyacrylic fiber resists the stresses of cement shrinking in different directions to raise the strength of solidified waterproof mortar and raise the fireproof limit.

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  • 这种凝固钢锭头部中央会形成

    When such a steel solidifies, a shrinkage cavity know as a "pipe" is formed in the top central part of the ingots.

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  • 这种凝固钢锭头部中央会形成

    When such a steel solidifies, a shrinkage cavity know as a "pipe" is formed in the top central part of the ingots.

    youdao

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